<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">

 <head>

  <title>CSS Test: background-position - ex unit</title>

  <link rel="author" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/colors.html#background-properties" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/syndata.html#length-units" />
  <link rel="help" href="http://www.w3.org/TR/CSS21/fonts.html#font-size-props" />
  <link rel="help" href="http://www.w3.org/TR/css-fonts-3/#font-size-prop" />
  <link rel="match" href="background-position-002-ref.xht" />

  <meta content="ahem image" name="flags" />
  <meta content="ex unit is the 'x-height' of the relevant font. 'em' and 'ex' length values when defining 'font-size' property refer to the computed font size of the parent element." name="assert" />

  <link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
  <style type="text/css"><![CDATA[
  html {font: 20px/1 Ahem;}

  body
  {
  background: url("support/1x1-lime.png") repeat-y 12.5ex 0;
  font-size: 2.5ex;
  margin: 80px 0px 8px 8px;
  }

  p#expected-results {font-family: serif;}

  img
  {
  left: 0px;
  position: absolute;
  top: 42px;
  }
  ]]></style>

 </head>

 <body>

  <p id="expected-results">A thin green vertical line should appear at exactly 400px<img src="support/ruler-h-200px-400px.png" width="700" height="18" alt="Image download support must be enabled" /></p>

 </body>
</html>